288 Agricultur, Horticultur, etc. — Personalnachrichten. 



cuttings , the lower two feet of cane should never be used for 

 this purpose. 



Rind disease is caused by a fungus which attacks the stem of 

 the cane. The leaves dry up and whither, and if the cane is split 

 down the centre one or more of the internodes will be seen to be 

 coloured reddish. Filaments of a fungus will be found in the cells 

 of the discoloured tissue. The rind turns brown in colour and 

 begins to shrivel. The fruits of the fungus appear as minute velvety 

 patches on the discoloured parts of the rind, as a rule, just below 

 the leaf base. All diseased canes should be burned as far as possi- 

 ble, and bcrers kept in check so as not to afford holes by which 

 the fungus can enter the cane. 



Cercospora vaginae , Krüger, is a less important pest, which 

 attacks the leaf sheath of the cane, causing discoloured patches. 



W. G. Freeman. 



Thornton, T., Improvement of Cotton by Seed Selection. 

 (West India Bull. VII. p. 153—170. 1906.) 



The importance of seed selection is pointed out and the impro- 

 vements effected in producing early ripening plants, to increasing 

 the length of staple and augmenting the resistance to disease in 

 Sea Island cotton in the United States are quoted. Onl}^ recently 

 have similar methods been employed in Africa, India and the 

 West Indies. 



The scheme for seed selection work in the West Indies is out- 

 lined and the results obtained in Barbados given in detail. The 

 first selections are made m the field and the lint from these plants 

 is afterwards examined in the laboratory the characters taken with 

 consideration being: 1. Length of staple and uniformity of length. 

 2. Weight of seed cotton per plant. 3. Weight of seed cotton per 

 boll or capsule. 4. Proportion of weak fibre. 5. Proportion of lint to 

 seed. 6. Proportion of lint per plant. 7. Diameter of fibres. 8. Ge- 

 neral appearance, including fineness and silkiness. 



W. G. Freeman. 



Personalnaehriehten, 



Ernannt: Dr. N. A. Cobb, früher in Sydney und Hawaii, 

 zum Assistenten am Pflanzen-Untersuchungsamt in Washington. — 

 Dr. L. Jost, a. o. Prof. an der Universität Strassburg i/Elsass zum 

 etatsmässigen Professor an der landwirtschaftl. Akademie Bonn- 

 Poppelsdorf und a. o. Prof. an der Universität Bonn. — Dr. J. 

 Behrens, Vorstand der landwirtschaftlichen Versuchsanstalt Augus- 

 tenburg (Baden) zum Direktor der kaiserlichen biologischen 

 Reichsanstalt f. Land- und Forstwirtschaft in Berlin-Dahlem. — 

 Prof. Dr. Adolf Hansen in Giessen zum Geheimen Hofrat. — 



Habilitiert: für Botanik Dr. Herzog an dem eidgenössischen 

 Polytechnikum in Zürich. 



In den Ruhestand tritt am 1. October d. J. der ordentl. Pro- 

 fessor an d. landwirtsch. Akademie Hohenheim Dr. C. Fruwirth. 



Ausgegeben ; IT" September lOOT. 



Verlag Ton Gustav Fischer in Jena. 

 Buchdruckerei A. W. Sijthoff in Leiden. 



